Niwot is a community in Boulder County, Colorado, home to about 3,447 people across 4.0 square miles. Its ZIP code is 80544, and parts of 80503 are in Niwot too.
Homes sold for a median of $282 per square foot in the three months ending August 2026, a balanced market.
All in Niwot
Mostly Longmont; part is in Niwot
Each card is that ZIP code’s whole market, including any part outside Niwot. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Niwot’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Denver International Airport (DEN)33 miles away |
|---|---|
| Closer regional airport | Rocky Mountain Metropolitan Airport (BJC)17 miles away |
| Nearest city of 250,000+ | Denver, CO31 miles away |
| Nearest city of 1 million+ | Phoenix, AZ594 miles away |
Straight-line distances from the center of Niwot; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Niwot had 4,306 residents in the 2020 census, up 4% since 2000.
It’s the 139th largest of 472 towns in Colorado by population.
Boulder County grew from 21,544 residents in 1900 to 330,758 in 2020.
Boulder County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 91°F in summer, and winter lows average 14°F. About 15.5 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Longmont 2 Ese, CO weather station (5 miles away).
159,619 jobs at 12,990 businesses in Boulder County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
12 doctors and other health care providers list an office in Niwot.
Nearest hospitals
Providers with an office here
| Specialist doctors | 2 |
|---|---|
| Dentists | 4 |
| Mental health providers | 2 |
| Physical and occupational therapists | 2 |
| Chiropractors | 2 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (12 nearby)
Grocery stores (1 nearby)
Pharmacies (1 nearby)
Libraries
Museums
Theaters and performance venues
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by St. Vrain Valley School District No. Re1J. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Niwot Elementary SchoolNiwot | Pre-K–5 | 411 | Public | 3.9 mi |
| Niwot High SchoolNiwot | 9–12 | 1,509 | Public | 3.7 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Boulder Valley Waldorf SchoolNiwot | Pre-K–8 | 95 | Nonsectarian | 4.5 mi |
| Rocky Mountain Christian AcademyNiwot | Pre-K–8 | 98 | Christian (no specific denomination) | 3.9 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Longmont and Boulder.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.